Check user-provided PATH for krb5-config (#390)

When MIT or Heimdal Keberos libraries are installed at a custom
location there may be several krb5-config installed. The one
located at the user-provided path (if any) needs to have preference.

diff --git a/configure.ac b/configure.ac
index f46110d86cec44f06b45fe02c702faf720d223c5..a08203ab94fc8efb4cd813795176d03a51a79379 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1420,7 +1420,7 @@ if test "x$with_mit_krb5" != "xno"; then
   ])
   if test "x$squid_pc_krb5_name" = "x" -a "$cross_compiling" = "no"; then
     # Look for krb5-config (unless cross-compiling)
-    AC_PATH_PROG(krb5_config,krb5-config,no)
+    AC_PATH_PROG(krb5_config,krb5-config,no,$krb5confpath)
     if test "x$ac_cv_path_krb5_config" != "xno" ; then
       krb5confpath="`dirname $ac_cv_path_krb5_config`"
       ac_heimdal="`$ac_cv_path_krb5_config --version 2>/dev/null | grep -c -i heimdal`"
@@ -1653,7 +1653,7 @@ if test "x$with_heimdal_krb5" != "xno" -a "x$KRB5LIBS" = "x"; then
   fi
   if test "x$squid_pc_krb5_name" = "x" -a "$cross_compiling" = "no"; then
     # Look for krb5-config (unless cross-compiling)
-    AC_PATH_PROG(krb5_config,krb5-config,no)
+    AC_PATH_PROG(krb5_config,krb5-config,no,$krb5confpath)
     if test "x$ac_cv_path_krb5_config" != "xno" ; then
       krb5confpath="`dirname $ac_cv_path_krb5_config`"
       ac_heimdal="`$ac_cv_path_krb5_config --version 2>/dev/null | grep -c -i heimdal`"